Legal analysis: the time limit for trademark registration is 10 year. Where a registered trademark needs to be used continuously after the expiration of its term of validity, the trademark registrant shall go through the renewal procedures in accordance with the provisions within 12 months before the expiration. If it is not completed within this time limit, it can be extended for six months. The validity period of each renewal registration is ten years, counting from the day after the last expiration of the trademark. If the renewal formalities are not completed at the expiration of the period, the registered trademark shall be cancelled. In countries that implement the trademark registration system, the exclusive right to use a trademark is obtained through registration in accordance with the principle of registration, and the validity period of registration is strictly limited. As a kind of intellectual property, trademark right is exclusive, regional and temporal, so temporality is one of the characteristics of trademark exclusive right. The temporality of trademark right means that a trademark can be protected by law within the legal period of normal use after being approved by the trademark registration authority. This statutory period is also called the protection period and validity period of a registered trademark. After the expiration of the validity period, if the trademark owner wants to continue to use the registered trademark and protect it by law, he needs to renew the registration according to legal procedures. If there is no lawsuit that causes the trademark to be revoked, the registered trademark can be protected indefinitely as long as the trademark registrant fulfills the renewal procedures on time. At this point, trademark right is different from patent right and copyright which belong to intellectual property rights.

Legal basis: Trademark Law of People's Republic of China (PRC).

Article 39 The term of validity of a registered trademark is ten years, counting from the date of approval of registration.

Article 40 Where a registered trademark needs to be used continuously after the expiration of its term of validity, the trademark registrant shall go through the renewal procedures in accordance with the provisions within 12 months before the expiration; If it has not been handled during this period, it can be extended for six months. The validity period of each renewal registration is ten years, counting from the day after the last expiration of the trademark. If the renewal formalities are not completed at the expiration of the period, the registered trademark shall be cancelled. The Trademark Office shall announce the renewed registered trademark.